Apparatus for the manufacture of boxes of cardboard and the like



Sept. 22, 1931. F, STELLING 1,824,241

APPARATUS FOR THE MANUFACTURE OF BOXES OF CARDBOARD AND THE LIKE FiledOct. 15, 1950 Patented Sept. 22, 1931 UNITED STATES rarer OFFICE FRANZRIEDL STELLING, OF ROSEVILLE, SYDNEY, NEW SOUTH WALES, AUSTRALIAAPPARATUS FOR THE MANUFACTURE OF BOXES OF CARDBOARD AND THE LIKEApplication filed October 15, 1930, Serial No.

The invention relates to the manufacture of cardboard or like boxes suchas are commonly employed for retailing confectionery and of the typewhich includes a short body portion (termed a rim) of an exteriorlyconvex shape, and a bottom to conform to the shape of the rim but ofslightly larger dimensions to provide a flange around the rim.

The invention relates to the manufacture of both the lid portion and thebox proper, which are complementary, and to avoid repetition will bedescribed in its application to the manufacture of the box only.

In the manufacture of boxes of the type referred to, the conjoining ofthe rim to the bottom is effected by means of a strip of.

paper adhesively attached to the lower portion of the rim, to the uppersurface of the flange, and, being turned over'the edge, to the undersideof the latter. This operation has hitherto been performed by hand and,

in the case of boxes ofcircular, oval or ellip tical form or of otherform including one or more curved sides, requires the employment of moreor less skilled labour and great care in working the damp paper roundthe curve and stretching it. A The invention is commercially applicable0 to an exteriorly convex surface of a box, and

although it could be utilized upon an exteriorly concave surface theapplication thereto presents difficulties not met in the formerapplication.

The invention consists in apparatus for the manufacture of boxes ofcardboard or the like, said apparatus comprising a block rotatablymounted in a frame and upon which the rim and base, or lid, are to bemounted in the required juxtaposition, roller-means adjustably mountedin the frame to contact with and apply an adhesive strip to the rim andbase, or lid, and means for rotating said block.

The invention also consists in apparatus as hereinafter set out. i

The block referred to is of such shape to neatly fit within the rim tomaintain the shape thereof, and if the rimis in the form of a cylinderthe block is drum shaped, but

488,920, and in Australia November 6, 1929.

applied to the formation of the lower half of a box having a cylindricalrim and a disc base, but it is to be understood that the invention maybe applied to the manufacture of other shapes as hereinbefore explained.

Reference is now had to the accompanying drawings which depict apreferred form of apparatus in accordance therewith and in which Fig. 1is a perspective view of the complete apparatus, a

Fig. 2 a fragmentary and substantially central cross-sectional elevationthereof,

Fig; 3 a fragmentary detail elevation of a block with a box thereon andthe roller in operative position and pressing the strip into contactwith the rim and base, and

Fig. 4 is a fragmentary plan view of the strip being folded to thecorrect shape by the roller.

The apparatus comprises a substantially rectangular framing 1, in oneside of which is rotatably mounted a transverse shaft 2, carrying at itsinner end, adjacent the centre of the framing, a drum 3 and, at a pointremote from the drum, a spur gear wheel 4.

In axial alignment with shaft 2, and rotatably and slidably carried inthe other side of theframing, is a shaft 5 carrying at its inner end adisc 6 (Fig. 3), the shaft being loaded with a spring 7 and the discurged thereby towards the inner end of drum 3.

Spur wheel at and shaft 2 are rotated by a pinion gear wheel 8 carriedon a shaft 9 rotatably and slidably mounted in the framing and drivenfrom an external source of power (not shown), the shaft 9 being slid inthe framing to bring the pinion into mesh with the spur by means of arocker arm 10 rotatably engaging the shaft 9 and operated by a pedallever 11. A spring 12 normally maintains the rocker lever 10 in theinoperative position in which the pinion is out of engagement with thespur wheel,

in which position no motion of shaft 2 occurs. 1

Disc 6 is retracted, against the pressure of spring 7, from its positionin contact with the inner face of drum 3 by means of a rocker lever 13rotatably engaging its shaft 5.

- the drum, thus preserving clearance between the drum and a disc 17which is to'form the base of the box and which is held in juxtapositionon, and in contact with, the rim by the pressure of disc 6 under theinfiuence of spring 7. This clearance ensures intimate contact and thecorrect relative dispositions between the base and the rim of the box.

It is to be noted that the base 17 is of slightly larger'diameter thanthe rim so that a flangelS (Fig. 3) is formed thereby and it is to thisflange and to the adjacent portion of the rim that the adhesive strip isapplied to unite the two integers.

A roll of adhesive strip 19 is rotatably mounted by a bracket 20 to theframing, and thestrip is taken through guides 21, 2-1 and between aspring loaded roller 22 and an underlying roller 23. The lower roller 23is immersed in a tank 2 1 of water or gum to be applied to the strip bythe roller during its progress between the rollers (in known manner).From the tank the strip is taken to the flange 18 to which it is appliedas now described.

. A lever 25 is atone end pivoted, to move in a vertical plane, on apost 26 on the framing, and extends forwardly to overlie the drum 3 anddisc 6, where it is formed with 1 a fork-end 27 and a bridge-piece 28.

Rotatably mounted on a shaft 29 carried in the fork end 27, is a boss 30having a roller 31 formed thereon, the roller 31 over lying the lowerend of rim 15 when in the operative position and being adapted to pressthe strip 19 into contact therewith.

Slidably and rotatably mounted on shaft 29 is a second roller 33 whichis urged by a spring 34 towards roller 31, but which is retractable fromthis position by means of a rocker hand lever 35 pivoted on bridgepiece28 and rotatably engaging the boss 33 of the roller, Roller 33 is oflarger diameter than roller 31 and has a chamfered edge 36 (Fig. 4), sothat the strip is pressed tightly on to either side of the flange bythese opposedfaces of the rollers 31 and 33 under the influence ofspring 34, and is stretched over the edge of the flange 18.

The lever 25 is urged towards the opera tive position in which therollers 31 and 33 are in engagement with the box on the drum by means ofa spring 37, but the lever may be lifted clear thereof to an inoperativeposition (shewn in dotted lines in Fig. 2) wherein it is retained by asuitable detent catch 25 which engages a pin 26? on post 26.

The operation of the apparatus is as follows The lever 14 is actuated todraw disc 6 clear of drum 3, and the box rim 15 is placed on the latter(Fig. 3) and the base disc 17 carefully juxtaposed on therim as shewn,when the pedal is released and the two units held in this position bythe pressure of disc 6 against the base 17, under the influence-0fspring 7. i

The strip 19 is drawn between the moistening rollers 22 and 23 and itsend is applied to the junction of the rim and base disc in a positionwhere it contacts with the lower edge of rim and overlies flange 18. Thelever 25 is thenlowered to bring the rollers 31 and 33 into contact withthe strip on the box units, the roller 31 pressing the strip intointimate contact with the lower edge of the rim, and the opposed facesof rollers 31 and 33 pressing it into contact with either side of theflange.

The machine is then started by operation of pedal lever 11, which causesthe drum '3, disc 6 and the box parts mounted thereon to rotate, and therollers 31 and 33 to roll on the latter. The strip is drawn from theroll and as it approaches the drum is first engaged by the chamferededge 36 of roller 33, on account of the large diameter thereof, (Fig. 4)and is pressed into contact with the under (or outer) face of flange 18.after which the roller 31 engages the strip and turns same over flange18 and resses it into contact with the sides of the ange and the lowerend of the rim 15. The application of the strip to the outer edge of theflange prior to the other parts prevents the splitting or tearing of thestrip which would occur were it applied to all the surfacessimultaneously.

When the box parts have been rotated through one revolution and thejuncture of the two effected, pedal lever 11 is released and the motionceases, after which hand rocker lever 35 is actuated to release thepressure on either side of flange 18, and the lever 25 is lifted toclear the rollers from the box. Pedal lever 14 is then actuated to cleardisc 6 of the base of the box, the latter being then drawn from the drum3 in the assembled state.

The operation is then repeated on other box parts as required.

It is to be understood that in the appended claims the use of the wordbase includes a lid. as the processes of forming the base or lid uponthe rim are analogous.

What I claim and desire to secure by Letters Patent is V 1. Apparatusfor the manufacture of boxes of cardboard or the like, comprising aframing in which is rotatably mounted a block to neatly receive the rimof a portion of a box, a plate rotatably mounted in the framing tocontact with, and hold in juxtaposition on the rim, a base of such sizeas to form a flange about the rim, and two rollers mounted in theframing to apply to the box parts an adhesive strip for the purpose ofjoining them, one of said rollers being adapted to register with andbear,upon the rim and the adjacent surface of the flange, and the secondroller, of larger diameter than the former roller and spring pressedthere-toward, being adapted to overlie the surface of the flange remotefrom the rim, so that pressure is applied by these rollers to the facesof the flange under the influence of the spring pressure when therollers are in operative position upon the box parts.

2. Apparatus according to claim 1, in which the larger roller has achamfered edge on that surface adjacent the smaller roller.

3. Apparatus according to claim 1, in which the rollers are mounted inone end of a lever pivoted in the framing, and the larger roller has achamfered edge on that surface adjacent the smaller roller.

4. Apparatus according to claim 1 and including means for retracting thelarger roller from the smaller against the spring pressure.

5. Apparatus for the manufacture of boxes of cardboard or the like,comprising a framing, mounted in the framing a horizontally disposedspindle carrying a block to neatly fit a rim of a portion of a box to heformed, driving means for intermittently rotating the spindle from asource of power, mounted in the framing in alignment with the saidspindle a second spindle on which is mounted a disc spring-pressedtowards the block to hold a base in justaposition on said rim and meansfor retracting the discfrom the block, a mounting on the framing for aroll of adhesive strip to be applied to the adjacent portions of the rimand base to effect a juncture thereof, a device for applying moisture tothe strip, a lever pivotally mounted in the framing to move in avertical plane and carrying at one end two rollers to apply the strip tothe portions of the box, one of said rollers being adapted to bear uponthe rim and the adjacent flange formed by the base with the rim, and thesecond roller being springpressed towards the former roller and having achamfered edge to overlie the face of the flange remote from the rim,said rollers being so arranged that pressure is applied

